Whilst technically correct, the use of the descriptor "IED" has more gravitas than the term, "home made bomb".
In my view, "IED" implies a professional or military level of design, sophistication or potential destructive force by using improvised military munitions.
"Home made bomb" implies the materials to make it are gathered from a domestic environment.
The Boston bomber was charged with using a "weapon of mass destruction", until then a term in common use for err well weapons of war, not the humble pressure cooker.
In both cases are police deliberately over emphasising the threat by using these politically charged terms?
In doing so, raising level of public apprehension?